Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John R Bylewski, MD

Individual provider Internal Medicine Physician · NPI 1205931243

John R Bylewski, MD is an Internal Medicine Physician in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4900 S Archer Ave Ste 5
Chicago, IL 60632
Phone: (773) 767-5950
Fax: (773) 767-5946
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036070127 (IL)

Record details

NPI number1205931243
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 14, 2006
Last updated in NPPESDecember 2, 2009

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